Elektronika D1-014-Kvadro 1978
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The quad amplifier "Electronics D1-014-quad" in 1978, expertly produced the Kazan plant of radio components. The amplifier was developed in 1977 and was originally called '' Electronics D1-011-Quadra ''. There were several design options (2nd and further photo). In the pilot production (about 10 devices) amplifier went in 1978 under the name "Electronics D1-014-quad". The amplifier is designed to complete household radio complexes and is designed for high-quality amplification of mono, stereo and discrete quad signals and for decoding such signals using the QS and SQ matrix system, as well as the conversion of stereo signals into pseudo-quad. The amplifier has a number of advantages over the "Jupiter-Quadro" amplifier. It has a built-in stereo decoder, a three-way tone control, and overload protection of loudspeakers. Key Features: Rated output power 4x25 watts. The nominal range of reproduced sound frequencies is 20 ... 31500 Hz. Power consumption 260 watts. Dimensions of the model - 505x420x151 mm. Its weight is 20 kg. Retail price of 614 rubles.
Documentation:
Information from collection of Valery Khartchenko